Electric heater for steam boilers and superheaters, etc



April 26 1927. 1,626,295

W. A. PATSCHEIDER ELECTRIC HEATER FOR STEAM BOILERS AND .SUPERI-iEATERS E TC Filed Mafch 27, 1924 T m 0 0 0 0 o o o o o o o m 0 9 I. 5w

05% 12 1 2 m/ zmzw;

Patented Apr. 26, 1927.

WALTER .A. PATSCHEIDER, F AUBURNDALE, MASSACHUSETTS.

HEATER FOR STEAM BOILERS AND SUPERHEATERS, ETC.

Appiteation filed March 27, 1924. Serial No. 702,381.

This invention relates to electric heaters, and has for its primary object the provision pf a device of this character which may be used as a heater for steam boilers, steam superheaters, domestic boilers and the like, which shall be comparatively inexpensive to operate, and which shall be simple and comparatively inexpensive to manufacture.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawing, wherein:

The figure is an elevational View of a heater constructed in accordance with my invention, the boiler being shown in longitudinal section.

Referring to the drawing by reference characters, A designates a drum and B a step down transformer,

The drum A comprises a cylindrical or lateral wall 1 and end walls or heads 2. In practice, it may be arranged horizontally or vertically, it may be of any size, and it may be used as a steam boiler, or as a superheater for steam, or as a domestic boiler. When used as a steam boiler or superheater for steam, it-will be equipped with the necessary inflow and outflow pipes, safety valves, gauges, and the like, and when u"ed as a domestic boiler it will be provided with tapped openings to permit the various pipes of the domestic water heating system to be connected thereto.

The high tension circuit of the transformer B includes the leads 3 and the coils 4 together with any suitable means, not shown, by which the voltage in the C0113 4 may be altered to increase or decrease the amperage of the current flowing through the resistance element 5 of the heater as conditions may require. The low tension circuit of the transformer B includes the single conductor 6 which is preferably made of bar or cast copper and which may or may not be laminated, together with the leads 7 which are formed integrally with the ends of the conductor 6. A core 8 of any suitable material and of any suitable construction is interposed between the coils 4 and the condoctor 6.

The resistance element 5, which is preferably made of Monel metal, may extend longitudinally of the drum or boiler l as shown in Figure 1, or it may be arranged to extend transversely of the drum or boiler 1. The resistance element 5 is hollow and perforated, and the ends thereof are closed by plugs 5 which extend through the heads 2 of the drum or boiler 1 and are embedded and suit-ably secured in the terminals of the leads 7.

The plugs 5 are provided with flanges 9, and at their terminals the leads 7 are provided with flanges 10. The flanges 9 are located inwardly and the flanges 10 outwardly of the heads 2 of the drum 1, and

suitable fastenings 11, such as bolts or rivets, engage the flanges and heads to secure the terminals of the leads 7 and the resistance element 5 to the drum or boiler 1. If desired, gaskets 12 of any suitable insulating material may be interposed between the a heads 2 and the flanges 9 and 10.

From the foregoing description, taken in connection with the accompanying drawing, it should be apparent that a current of electricity passing through the resistance ele ment 5 will heat such element, that the amperage of the current may be regulated to produce the required degree of heat, and

that there is practically no loss of heat units as the resistance element is in direct contact with the contents of the drum or boiler A. It should also be apparent that my invention provides a simple, economical and clean heater for boilers of any type.

It should be further understood that the drawing is merely illustrative and does not pretend to give exact proportions. Furthermore, the said drawing is illustrative of a preferred construction, it being my expectation that various changes and modifications may be made without departing from the spirit and scope of my invention.

ture.

WALTER A. PATSOHEIDER. 

